Starships is a great electronic dance pop song. It has "Summer hit" written all over it. I can imagine people dancing to this at a beach near me. There are some strong dance music breakdowns after the chorus and though it's written by RedOne, it would totally pass for a David Guetta song. The "Twinkle Twinkle Little Star" sampling is just awesome!
Now, let's go to it's flaws. The lyrics aren't anything special (for a Nicki Minaj song anyway), her voice is auto-tune (which shouldn't since she has a great voice) and it's a totally unsuitable song for a rapper. I mean, it's great and all, but she's a RAPPER! I want to listen to her rhyming and flipping those she doesn't like off!
As a Nicki fan, the song is worth a big fat 1/5 stars, but as a pop/dance music lover and commenting on it individually, it's a 4/5! But I would really want to see artists getting out of they're "auto-tune safe house" and take a leap of musical faith.